Alarm for automobile radiators



K. KELLER.

ALARM FOR AUTOMOBILE RADIATORS.

APPLICATION FILED MAY29, 1920.

- Patented May 23, 1922.

8140mm My! ff'Ziew [TED STATES KARL KELLER, OF BROOKLYN, NEW YORK, ASSIGNOR TO J. H. WHITE MANUFAC- TURING COMPANY, OF BROOKLYN, NEW YORK, A

CORPORATION OF NEW YORK.

ALARM FOR AUTOMOBILE RADIATORS.

Application filed May 29,

T 0 all whom it may concern:

Be it known that I, KARL KELLER, a citizen of the United States, residing at the borough of Brooklyn, in the county of Kings, city and Stateof New York, have invented an Improvement in Alarms for Automobile Radiators, of which .the following is a specification.

My invention relates to alarm devices, and is particularly designed for attachment to automobile radiators, its object being to antomatically produce an audible sound upon the subsidence of the water in the radiator below a predetermined level.

The details of the invention are hereinafter particularly described.

In the accompanying drawing Figure 1 is a front view in vertical section of my invention, applied to an automobile radiator.

Fig. 2-is a plan view of the same detached from the radiator. i

Fig. 3 is an elevation of the concave ring forming a part of the casing.

Fig. 4 is a front view of the rear side plate of the casing, and

Fig. 5 is a front view of the front side plate of the casing.

Similar reference characters denote like parts throughout the several views.

10 indicates an automobile radiator, provided with a filler opening 11, and a closure member or cap 12 for the same.

This cap has a central circular aperture 1 3, threaded at the lower part.

14 denotes a casing provided with a neck 15, through which there is a central vertical opening 16.

In alignment with this opening, there is a threaded lug 17, secured to the upper part of the interior of the casing, and extending downward therefrom a predetermined distance.

At either side of the lug 17 there are a plurality of transverse slots .18, in the top of the casing, with baffle-plates 19 extending therefrom within the casing.

This casing may be ornamented as desired, and it may be of any suitable shape or configuration, but I prefer to make it as shown, consisting of a concave ring 20, with the sides 21 soldered or otherwise secured thereto.

22 indicates a tube, preferably three inches diameter. The upper end of this tube is in- Specification of Letters Patent.

Patented May 23, 1922. 1920. Serial No. 385,130.

ing portion being exteriorly threaded to en-- gage the thread at the lower part of the aperture 13, in the cap 12, and thereby secure the casing 14 to the cap. The lower end of the tube 22 is also threaded interiorly, for the purpose hereinafter described.

In that part of the tube 22, contained within the casing 14, and at a predetermined dis tance from the bottom of the casing, there is formed a whistle 23, which when the tube is screwed to place on the lug 17, faces the inner surface of the concav ring 20 at one side thereof.

24 denotes another section of tubing of smaller diameter than the tube 22, preferably three-eighths of an inch outside diameter, being provided with a screw thread on the exterior at one end, to engage the threads on the interior of the lower end of the tube 22, and thus connect the two sections of tubing together.

The tube 24 is provided on opposite sides with a plurality of aligned holes 25, which are preferably No. 28 drill.

The tube 24 is of such length that its open lower end extends into the radiator to the point of water level at which it is desired notice shall be given.

When the water in the radiator subsides below the end of the tube 24, the water contained therein is discharged and steam substituted,which rushes up through the tube (aided by the drilled holes 25), and its impingement upon the whistle 23 in the tube 22, causes an audible alarm.

The steam may escape from the casing 14 to some extent, but is retarded by the baffleplates 19, which cause the water of condensation to flow back into the casing.

My invention provides a very efficient and inexpensive device, which may be applied to the radiators of automobiles of various manaperture, of a casing disposed above said cap and havlng an opening in register with the aperture therein, a whistle located with- 2. The combination with an automobile radiator having a filler opening and a cap therefor provided with a centrally disposed aperture, of a casing provided with transverse slots in its upper part and having an opening at the bottom in register with the aperture in the cap, a whistle located within the casing with its tubular-stem passing through the opening therein and through the aperture in the cap, a vertical tube connected with the whistle and extending. into the radiator a predetermined distance, whereby when the water in the radiator subsides below the end of the said tube, the whistle is automatically sounded.

3. The combination with an automobile radiator having a filler opening and 'a cap therefor provided with a centrally disposed aperture, of a casing provided with transverse slots in its upper part and baffle-plates at one side of each slot within the casing, there being an opening in the bottom of the casing in register with the aperture in the cap, a Whistle located within the casing with its tubular-stem passing through the opening therein and through the aperture in the cap, a vertical tube connected with the whistle and extending into the radiator a predetermined distance, whereby when the water in the radiator subsides below the end of the said tube, the whistle is automatically sounded.

4. In combination with an automobile radiator having a filler opening and a cap therefor provided with a centrally disposed aperture, a casing disposed above the cap and having an opening in its bottom in register with the aperture in the cap, there being a threaded lug projecting downward within the casing from its top in line with said opening in its bottom, a vertically disposed tube fitted in the aperture of the cap and extending-into the casing with its interiorly threaded upperend engaging said threaded lug, a whistle in that portion of said tube within the casing, another vertical tube of smaller diameter connected at its upper end to the lower end of said first tube and extending into the radiator a predetermined distance.

5. The combination with an automobile radiator having a filler opening and a cap therefor provided with a centrally disposed aperture, of a casing disposed above the cap and provided with a' plurality of transverse slots in its upper part and baflle-plates at one side of each slot within the casing, there being an opening in the bottom of the casing in register with the aperture in the cap, a threaded lug projecting downward within the casing from its top inline with said opening in its'bottom, a vertically disposed tube fitted in the aperture in the cap and extending into the casing with its interiorly threaded upper end engaging said threaded lug, a, whistle in that portion of said tube within the casing, and another vertical tube of smaller diameter connected at its upper end to the lower end of said first tube and extending into the radiator a predetermined distance.

6. The combination with an automobile radiator having a filler opening and a cap therefor provided with a centrally disposed aperture, of a casing disposed above said cap and having an opening in re ister with the aperture therein, awhistle ocated within the casing with its tubular stem passing through the opening therein and through the aperture in the cap, a vertical tube connected with the whistle and extending into the radiator a predetermined distance, whereby when steam is generated in the radiator after the water has reached a predetermined level, the whistle is automatically sounded, the escape of steam and water of condensation being retarded by said casing.

Signed by me this 22d day of May, 1920.

KARL KELLER. 

